Please help me!

Zhong JianApr 22, 2013, 8:07 AM

Help me plz i just brough a sappire hd 7970 3gb ddr5I folo the quick installation guide.It told me to locate the slotcard firmly into pci slotI did after i press power on switch, my screen " no video input" black screenMy keyboard still have light, fans are working.I tried removing the sappire hd my pc just work fine.How the hell can i install the software when my screen only show no video input?